Hose clamp



Aug. 19, 1924. 1,505,895

K F. W. KEMPF HOSE CLAMPA Filed Aug. 24, 1921 Patented Ausf. 19, 1924.

KARL F. W. KEF/IPE, 0F BUFFALO, NE'W YORK.

HOSE CLAMP.,

Application filed August 2 4, 1921.

To all who/n2, 'it 71mg/ Cout-ern J Be it known that I, KARL F. TV. limiter', a citizen of the Republic of Germany, residVM ing at Buffalo, in the county of Erie and State of New York, have invented certain new and useful ln'iprovcments in Hose Clamps, of which the following is a specification.

My invention relates to an improved hoseclamp, and it 'has for its primary object the provision of an improved clamp which may be easily and quickly applied to or be removed from a hose and in which considerable .leverage is secured to securely clamp the hose to a nipple or other object.

A further object the provision of a device of this kind of simple cmistruction and one that can be readily adjusted for use on hose of dtt'erent diameters.

A still further object. of my invention is to provide a hose clamp which when rusted, due to moisture, or to water dripping thereon, will not det 'act from its effectiveness.

Vith the above and other Objectis in view, the invention consists in the novel features of construction and vin the arrangement and combination of parts to be, hereinafter described and more particularly pointed out in the subjoined claims.

In the drawings FiO. t is a perspective view of my proved hose clamp showing the saine in clan'iping condition.

Fig. .2 is a transverse section through my improved hose clamp as applied to a hose fitted onto a nipple or similar object, the same being shown tightened on the hose and retained in tightened position. I

Fig. 3 is a like section, showing the actuating clement raised and the clamping ring or loop loosened.

Fig. 4 is a section Fig. 2.

Fig 5 is a detached perspective view of the retainer catch'.

Fig. 6 is a detached perspective view of the actuating or clamping lever.

Fig. 7 is a cross section en an enlarged scale, taken on line 7-7, Fig. 2.

The reference numeral l() designates a nipple, pipe` or other similar object, which may be employed to connect two lengths of hose together, or may be an object projecting from some device or apparatus, suoli taken on line 4 4,

serial ne. 494,91.

as the radiator of anautoniobile or therwater jacket of an explosive engine; and l1 desig-` nates a hose placed over the nipple and, adapted to be fastened thereto in a mannery to render it water-tight, or steam tight if. desired. l f l 12 designates my 'improved v hose-clamp considered, as a whole... This clamp comprises a flexible strip of metal, preferably fofl a springy nature, which is narrowed bei` tween its endsas.at 18, so that it will more readily conform itself to hose of ditferent diameters and more effectively grip the hose and clamp the same to anipple, pipe or. similar object. The metal from which the clamp isronstructed is curved to form an open ring or band let having one end portion vthereof overlappingtlie other, as at 15, the overlapped end portion having a pair of `outstanding .lugs 1G `at its extremity to which :1n-actuating or clamping leveijlt' is pivotally secured.l '.lhe overlapping por-y tion of thebzfindhas teethylS stamped out wardly therefrom, said teeth being formed by bulging the metal outwardly along a central region extending from the end of the overlapping portion inwardly a considerable` distance, the teeth so formed having abrupt faces 19 and inclined faces 2 0. 4 By extending' the-teeth along a considerable distance,

a wide range of adjustment is possible so that the clamp can be used on hoseof different diameters. The actuating or clamping lever 1TV is stamped from sheet metalA and at one end thereof has a pair of lugs which fit between the pair of lugs 16 of the band 14C and lie against the inner face of said lugs, a, pivot pin l2 being passed through the two pairs yof lugs and being headed or otherwise secured to the lugs 1G so as to retain the actuating orV clamping lever between said last-mentioned `lugs. Said. lever 17 is also provided with a pair of small lugs 23 a distance. from the lugs 21 and it has along its edges between the lugs 21A, and o3, flanges Qtto stitfen the body por?y tion 25 thereof, which is curved at its inner end, as at 26, said curved portion 26 having the pivot pin 22 as its center.' Thebody portion 25 of the actuating or clamping lever is provided with av plurality of open- Aings 2T in its curved portion 2G, audit has an outstanding bead Q8 extendingtroni said curved portion to a' point near its outer end; thus'the lever 17, althoughformed of sheet.

. the-- curved portion oi. said lever, thus lugs lt with teeth lt'i oimthe band let,

tightening the band around the hose, and as the pivot 22 ot said lever is spaced a considerable distance from the band so tightened, lthat port-ion ot the vhandle ex- Itending outwardly from the` curved portion 26 will be positioned beyond the dead center, thus automatically retaining said lever in position. However, as a clamping tit may be secured betere the actuating leverl is swung beyond the dead center, I

have provided corresponding edges ot the 2) and have pivotally secured betweenv thelugs 23 ot the actuating or clamping lever a retaining lever YSaid lever is stamped from sheet metal and has prongs 31 `formed at one end thereof, which are entered in openings 32 of the lugs 23 on said actuating' or clamping lever and serve as pivots. The retainer lever 30 is provided with a longitudinal rib 33 3 .i

so as to'prevent bending ot the 'saine under strain, and the tree end thereot, which may be beveled, as shown at 3l, is adapted to engage. the teeth 29 'termed on the lugs and thus prevent outward swinging movement ot' the actuating lever'r 17. In order to relieve the prongs or pivots''l 'oit'l the retaining lever trom strains, IXhave notched said lever at op posite edges, to torni shoulders 35, which )ear against the lugs 28, as clearly shown .in Fig. l. Decided advantages are secured bythe use of the retainer lever 30, even though the actuating' or clamping lever is lsvv'uug beyond the dead center, as it guards against outward movement ot the actuatlng or clamping'lever in the event ot' the free end thereot being accidentally struck with an upward thrust. Moreover, when the retainer lever is engaged with the tirst or second pair ot the series ot' teeth formed inthe llugs 16 and it is found that the hose liasvbecome set or unduly compressed so as todslightlyloosen the band, it is simply necessary to depress said actuating or clamping level', whereupon the .tree end of the retainer lever will engage the next pair of teeth onl the lugs 16.

It might here be stated that the edge oit' each of the lugs 16 having the teeth 29 formed therein describes an arc of a circle adapted to engage the'overlapping end oi" said band to tighten said band around the hose, and means carried by said rotatableA element adapted to engage said lugs for retaining said rotatable element in. tight` ened position.

2. A hose clamp con'iprising an open band having its ends overlapped and the overlapping' end provided with teeth formed bv n'essine' the metal outwardlv from which the band is formed to provide an abrupt and au inclined 'tace tor each tooth, and a rotatable actuating elementh'aving a series ot openings therein adapted toreceive the teeth ot said hand to tighten the band around the hose.

9. A hose clamp comprising an open band having' its ends overlapped and having a pair ot' spaced lugs extending outwardly',

from the overlapped portion thereof at opposite sides of the overlapping portion, said overlapping portion having teeth formed by stamping' the metal of the band outwardly, and an actuating' element pivoted between said lugs and having openings therein Iadapted to engage draw the band tightly around thel'iose.

1. A hose clamp comprising an olnnlimnd constructed of thin spring-'metaland having one end thereotI ovt-erlai'iping the other,

the overla i )ing end )ortion beinnr n'ovided with a longitudinal series oit' teeth stamped 'from the metal 'forming said baud and the overlapped end portion having a pair ot spaced lugs extending outwardly at opposite sides of said overlapping portion, an actuating' lever pivotally secured between said lugs and having a curved portion provided with a longitudinal series of openings adapted to mesh with said teeth, and means on said actuating lever engaging said lugs for retaining .said lever in clamping position.

A hose clamp comprising an open band formed of thin spring metal and having a pair of spaced lugs extending outwardly from opposite edges at one extremity thereof, said band having its ends overlapping but being capable o'tbeing separated and having' the overlapping end portion provided with a series oiz longitudinal. teeth. an actuating lever 'formed oi. sheet metal. provided with a pair of spaced lugs, a

said teeth to."

curved portion connecting said lugs and adapted tor co-act-ion with the overlapping end port-ion oi said band and an arm eX- tcnding outwardly trom said curved portion, the lugs oi'y said actuating lever heilig positioned between said tirst-n'ientioned lugs and pivoted tl'iereto, said hist-mentioned lugs having teeth at, corresijiondiug edges, and a retainer element pivotally secured to the aria ot said actuating lever and adapted to engage said teeth with its Ytree end.

A hose elanip comprising au open band formed ot a strip ot thin metal having opposite ends overlapped and having a pair oit' lugs at one end and a longitudinal series ol teeth stamped therein at its other end, an actuating lever Yformed of sheet metal stamped to provide a curved portion having openings, a pair ot lugs at opposite sides ot said curved portion and adapted to lit between the lugs ot said band, a pivot pin connecting both pairs of lugs, and a retainer lever pivotally connected to said actuating lever and adapted to engage said lirst-inentioned pair ol lugs with its tree end.

't'. A hose clamp comprising an open band termed ot' a strip oit thin metal and having opposite ends overlapped, the overlapped end portion having a pair ot lugs at its extremity and the overlapping end port-ion having a longitudinal series oi' teeth stamped therefrom, a pivot pin extending through said lugs, an actuating lever having a curved portion pro-vided with a series of openings adapted to mesh with the teeth of said overlapping end portion and being secured to said pivot pin, said curved portion tunning a segn'ient having said pivot pin as its axis. said actuating lever having an arm extending outwardly therefrom and said arm having a pair ol lugs thereon, and a retainer lever ivotally secured to said lastinentioned pair oit lugs and adapted to engage said hist-mentioned pair ot' lugs to retain said actuating lever in clamping position.

8. A hose clamp comprising an open band formed ot a strip oit thin metal having opposite ends overlapped, the overlapped end portion having a pair ot outstanding lugs at its extremity and the overlapping end portion having teeth stamped therefrom, a pivot pin extending through said lugs, said lugs having corresponding edges describing like segments having said pivot pin as their center and each being provided with a series of teeth, an actuating lever pivotally connected between said lugs and having a series of openings therein adapted to mesh with said Erst-mentioned teeth, and a retainer lever pivotally connected to said actuating lever at a point distant from said pivot pin and adapted to have its free end engage corresponding teeth of said lugs.

9. A hose clamp comprising an open band tornied ot a strip ot thin metal having op posite ends overlapl'ied, the overlapped end portion having a pair ot lugs at its extremity and the overlapping end portion having a longitudinal series ot teeth stamped therefrom, an actuating lever 'tornicd ot sheet metal stamped to }n.ovide a segmental portion and an arm extending from said segmental. portion, said actuating lever havingl a pair ot lugs at. opposite sides of said segmental portion adapted to lie between the lugs oi said open band and openings in said segmental a pivot pin extending through the lugs ot' said open band and actuating lever, and means tor retaining said actuating lever in clamping position.

l0. A hose clamp comprising an open band formed ot a strip of thin metal naving opposite ends overla1' ped and having a pair ot lugs at one end and a series oit teeth extending outwardly trom its other end, an actuating lever having a pair oit lugs, a mental portion between said lugs and an arm exteiiding trom said lugs, and a pivot pin extending through both pairs ot lugs, the segmental portion ot said actuating lever having said pivot as its center and being provided with openings adapted to engage the teeth ot' .said band.

11. A. hose clamp comprising an open band formed ot' a strip ot thin inet-al having opposite ends overlapped and having a pair ot' lugs at one end and a series ot' teeth stamped therefrom at its other end, the toothed portion ot' said band extending between said lugs, an actuating lever torined ot sheet metal having a pair of lugs at one end, a segmental portion between said lugs provided with openings adapted to engage the teeth ot said band` a second pair ot lugs spaced from the hist-mentioned pair t-hereol; a tlange at each side thereof between said two pairs of lugs and a longitu dinal rib stamped in said lever and extend ing trom the segmental portion thereof: outwardly, a pivot pin connecting the lugs ot said open band with the tirst-n'ientioned lugs oi said actuating lever, the lugs ot said band having corresponding edges provided with teeth, a retainer lever pivotally connected to the second-mentioned pair ot lugs oit said actuating lever and being formed of sheet metal, said retainer lever having a longitudinal rib therein and being adapted to engage corresponding teeth on the lugs ot said open band with its tree end.

ln testimony whereof I aiix my signature.

Ki/XRL F. lV. KEMPF.

portion engaging said teeth, 

